Hi Mag, and welcome to the Wine Board. Red wine comes from red or black grapes that are exposed to their skins for a period during fermentation. Rose's wines come from the same grapes and are given minimum contact with their skins. Sometimes white grapes are blended into rose's. White wine is made from green, brown, or yellow grapes with no contact with their skins.

All three kinds of wines can come in light, medium, or full bodies. So, you can't say that one is lighter or bigger just based on color.

I don't know that roses are made from green or yellow grapes. Juice or must from white wine grapes might be blended into a rose as pinot noir grapes and chardonnay grapes go into rose or pink champagne. Pinot blanc is considered a mutation from pinot noir, or at least part of the pinot family, and sometimes comes out with a slight blush.

Roses made from white grapes are sometimes given skin contact from used red grapes for a light blush or blended with red wine for a deeper color. That practice was common in France in the early 20th century, until the gov't clamped down for quality reasons. A couple of WA vintners, buddies of mine, are experimenting with blushes made with skin contact from Syrah grapes in Sauv Blanc. It tastes like Sauv Blanc to me, kinds like ruby grapefruit juice still tastes like grapefruit juice. One guy here is actually ble3nding Syrah with Viognier. So far, it's only for fun, among friends. That stuff is KILLER. I hope he decides to bottle it. Anyway, a white grape CAN'T make a rose because the color comes from red skins.